Manufacture of glass.



PATENTED FEB. 20,-1906. J. R. SPEEE & G. H. HARVEY.

MANUFACTURE OF GLASS.

APPLICATION FILED APR.]., 1905.

J RumszuS lythmmqm 25 p ure 1 represents, partly in elevation and rmrrnn STATES JAMES RAMSEY srnna, or

PATENT OFFICE. I

PITTSBURG, AND GEORGE H. HARVEY, OF

GLENFIELD, PENNSYLVANIA, ASSIGNORS TO BRONVNSVILLE GLASS COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

MANUFACTURE OF GLA$S.

Application filed April 1, 1905. Serial No. 253,258.

T all whmn it may concern:

Be it known that we, JAMES RAMSEY SPEER, residing. at Pittsburgand GEORGE H. HAR- VEY, residing at Glenfield, Allegheny county, and State of Pennsylvania, citizens of the United States, have invented or discovered new and useful, Improvements in the Manufacture of Glass', of which the following is a specification. v

Our invention relates to the manufacture of hollow articles, such as cylinders, from molten or, plastic glass, and has particular reference to means for maintaining any desired distance between the surface of the glass and the mouth of the inlet which supplies air or other gaseous element to the interior of the cylinders during their drawing. The pot may be provided, if desired, with an opening to permit the introduction of air therethrough into the cylinder and also in addition, if preferred, a duct therein to draw off the air during the formation of the cylinder.

-Other points of novelty will appear in the detailed description and the clalms.

. In the drawings forming a parthereof, Figartly in vertical section, one of the many orms which our invention may-assume, portions being broken away. Fig. 2 isa similar view of another form of our invention, the motor and some of its connections being omitted. f

-Referring now to Fig. 1, 1 represents a standard or mast which guides the carriage.

The

or arm 2 in its, vertical movements.

. outer end of the carriage supports the drawscrew shaft.

ing-tool 3, mounted on the removable pivot 4 and having at its lower end a bait 3. Supported the brackets 5 on the mast 1 and in the step 6 is the verticalscrew 7, in threaded engagement with the carriage 2. The screw may be driven in various ways, or other raising and lowering means may be used for the carriage. We have illustrated the screw 7 as driven by the motor 8, having the pinion 9 meshing withthe spur-gear 10 on the shaft 11, .which through the worm 12 thereon drives the worm-wheel 13, secured to'the le represents a furnace provided with the burners 15 or other heating meansand having the top opening 16 be-. neath the tool 3. At opposite sides of this a spring glass.

The trunnions of each pot are- Patented Feb. 20, 1 906.

atone end, so that the pots may be swung downwardly, as shown by the pot 18. EX- tending through the bottom of each pot and the boss therein is the 0 ening 21, the upper end thereof beinglarger t an the lower end, the larger end being connected sage 22, leading through the body of the pot and one of the trunnions. An air or gas inlet pipe 23 extends through the bottom of the furnace and the opening 21, which latter it preferably fits closely, space 24 between the pipe and the large part of the opening 21. T e pipe 23 has a deflector 25 to-direct the air toward the junction of the cylinder and the lass in the pot. The screw-shaft is provided with the pinion 26,"in

mesh with the gear-wheel 27, which drives the gear-wheel 28, sleeved loosely on the screw 29, secured to the tube 23 below the furnace 14. The wheel 28 carries a catch or nut section 30, which is preferably urged by into engagement with the screw 29. The catch has a vertical finger 31 standing in the path of the ring-cam 32, operated by the lever33, pivoted at 34. The cam-ring 32 surrounds the pipe 23 and has its outer face or rim tapering downwardly, so that when the cam is forced. down it withdraws the catch 3 0 fr0m the screw,29 and holds it withdrawn without interfering with the screw or the pipe. After the catch has been withdrawn from the screw 29 the pipe 23 can .be withdrawn from the pot by means of the lever 35, which has one end lying between the collars 36 on the pipe. The lever is pivoted at 37 and has the operating-handle 38. The

pots may be held with their upper surfaces close against the furnace-top by any means, as the bar 39, extending through the furnace into contact with the bottoms thereof.

The pot -17 beingsupplied with glass, as shown, the drawing-tool is by the motor 8 lowered until its lower edge dips into the When the glass has sufliciently adhered thereto, the screw is rotated in a reverse direction by the motor, causing a hollow body to be drawn in anpbvious manner, air or its equivalent being supplied to the into the duct or pasleaving an annular of the body the drawing operat on bymeans of thepipe' 23. The airescapes throu h'th'e duct-22, if the latter be dc fai'riwould fbe directed. by the deflector 25 at relatively higher'positions above the said surface, improvement be not used. We

niamtaanalconetant or desired distance" be io twenthe-upper end offithei pipe 23 and the surfac'eof the g'lassin the pot, preferably by means of the screw29, which is slowly lowei'ed '%during the drawing operation The gearing should be proportioned to maintain "r thematic,ofspeeds'desired between the carridge 2 and the tube 23 or any variable-speed gears may be used to accelerate or retard either of the speeds. As soon as the drawing ,opeiation'has been completed the cylinder is severed from the glass in the pot and preferably swung over on its side on the pivot 4, the carriage 2-being at the same time lowered gradually. The lever 33is then operated to cause the cam-ring 32 to withdraw the catch 25 from the screw'29. .Then' the lever is F actuated to withdraw the tube 23 from the pot, which is then swun into a vertical position to be'reheated. Ti "swung into horizontal position and charged with glass. The levers 35 and 33 are actuated- .to-insert the tube 23 through the pot andto connect the catch with the screw 29.

- The drawing of another cylinder proceeds, as

described. Referringnow toFig. 2, represents a 0t containing glass to be drawn mto a cy'lmer. The pot is shown sitting in an opening the top of thefurnace41. The drawingtool consists of the upper ortion 42, to which 40 issecured the lower annu ar-portion 43. Slid- Ia-bly arranged in an o. ening in the top of the deflector is. secured to the tube 45, so that the air esca ing therefrom passes between it and the de ector 46 toward the 'junctlon of the glass cylinder being drawn and the sur-.

face of theglass in the pot. 'Above the-deflector 47 and secured to the tube 44 is the deflector 48, preferably parallel to the other deflectors, which guides the air up through the tube 44. The tubes 44 and 45 are secured together by the s acers 49, and the tube 45 is continued throug the screw 50 and over' the sheaves 51 to a place within reach of the operator or to a windingdrum. The continuation of the tube 45 beyond the-screw 50 is flexible and is marked 52. driven in any well-known manner, drives, through the gears 53 and 54, the ear 55, loosely sleeved on the-screw 50. I he gear A 11 e cylinder is drawn the surface (tithe-glass in the'pot'islowered, so that the I of molten or'plastic' glass. der has been'coinpleted, .the tubes 44 .and 45 removed from above the pot.

e. other pot is then The screw 7,.

{is drawn the tubes are lowered'at such a rate as. to maintain the desired distance-between the lower ends of thetubes and the surface When the cylinare drawn upwardly by pulling the tube 52 after the catch has been withdrawn from the I screw 50 until their lower ends are within the cavity of the ,tool.. The cylinder can then be We donotdesire to be restricted to any the detallsjshown" and described, as various modifications may be employed which will- I embody the principles of our invention. I For example, the direction of the air through the a. tubes may be reversed or the outlet may be 1 omitted or closed, if found "desirable. Other parts may beomittedor supplied or modified. and still the principles of our invention will not hesatrificed. W'e alsodesire protection 5 so far as our invention is applicable tothe manufacture of flats. I

- Havin described ourinvention,we'elaim 1. In t e manufacture of .hollow glassware,

means independent of the molten glass for cooling the'glass in the neighborhood ofthe drawing zone, and means. for lowering the cooling means-in unison with the lowering of the molten glass in the. receptacle therefor,

drain: the drawing operation.

2. nthe manufacture of hollow glassware, means for delivering-afgase'ous fluid within the hollow ware in' the neighborhood of the drawing zone and'fmeansfor lowering the deliveri'ng means during the drawing operation. "I re 3. "In the manufacture of hollow glass, means within the hollow glass for cooling the glass inthe neighborhood of the drawing zone, and means for producing a relative movement of the glass-container and the 115 cooling means during the drawing operation.

4. In'the manufacture of .hollow glass articles, means for supplying a gaseous pressure within the article durin the' drawing op- I eration and means for simu taneously lower- 12 mg the said supplying means.

5." In the manufacture of hollow glass articles, means for drawing the glass, means for su plying a gaseous pressure within the artic e durin 'the drawing operation, means for I 2 5 loweringthesaid supplying means at. a desired rate relative to the rate oftravel of the drawing means.

- 6. In he manufacture ofglass, a swinging.

slam.

ting a fluid through; said opening but out of contact with-the molten glass and means for swinging the pot so that its mouth will be ,sufiiciently low to drain the same. I 7. Inthenianufacture of glass, a swinging pot having an opening; means-for admitting 'a'fluidithrou 11 said opening and means for removing sai first means j 8.. In'the -manufactureof -hollow glass ar-,

ticles a-pipe to' conduct fluid to the interior thereof, means for lowering the pipe, said means. including a detachable connection,

'and means for-withdrawing'the detachable connection.

9. In the manufacture of hollow glass articles, ap'ipe to conductfluid to the interior .thereof, means for lowering the pipe, said means includin a detachable connection,

means for. withdrawing the detachable connection and a second means for lowering the a. 10. gteps in the process of drawing hollow glassware, which: consist in drawing vertically a hollow body directl I from the molten glass, causing .the level of t e glass to change as the drawing progresses and supplying a cooling medium within the hollow ware at. a

substantially fixed distance from the draw cally a hollow body directly from the molten glass, supplying a gas in the neighborhood of the drawlng zone, within the hollow glass and simultaneously lowering the: supplying IIIBBJDS Signed at Pittsburg, Pennsylvania, this 29th day of March, A. D 1905.

v J. RAMSEY S PEER.

GEORGE H. HARVEY.

Witnesses: I

' F.'N. BARBER,-

M. A. BUSHMAN. 

